fibro noun2 •(informal) Fibromyalgia.When I got fibro, the Internet was not in common use, so I didn't have the resources that a newly diagnosed person would have now. — 2011 •(Australia) Fibro-cement; a building material consisting of asbestos fibres and cement pressed into sheets.Her house was a little grey fibro job. Nondescript really, with cracked and broken fibro louvres, sad and sorry walls. — 2006
